15680154120691 has 8 divisors (see below), whose sum is σ = 16230980836800. Its totient is φ = 15130002854400.

The previous prime is 15680154120689. The next prime is 15680154120713. The reversal of 15680154120691 is 19602145108651.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15680154120691 - 2¹ = 15680154120689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15680154120601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168815211 + ... + 168908068.

It is an arithmetic number, because the mean of its divisors is an integer number (2028872604600).

Almost surely, 2^{15680154120691} is an apocalyptic number.

15680154120691 is a deficient number, since it is larger than the sum of its proper divisors (550826716109).

15680154120691 is a wasteful number, since it uses less digits than its factorization.

15680154120691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337724909.

The product of its (nonzero) digits is 518400, while the sum is 49.

The spelling of 15680154120691 in words is "fifteen trillion, six hundred eighty billion, one hundred fifty-four million, one hundred twenty thousand, six hundred ninety-one".